diff --git a/free-programming-books-fa_IR.md b/free-programming-books-fa_IR.md
index a4afc506..1357b2bd 100644
--- a/free-programming-books-fa_IR.md
+++ b/free-programming-books-fa_IR.md
@@ -87,3 +87,4 @@
 * [درس یادگیری ماشین دانشگاه استنفورد](https://maktabkhooneh.org/course/35-%DB%8C%D8%A7%D8%AF%DA%AF%DB%8C%D8%B1%DB%8C-%D9%85%D8%A7%D8%B4%DB%8C%D9%86-mk35/)
 * [درس یادگیری ماشین دانشگاه صنعتی شریف](https://maktabkhooneh.org/course/273-%DB%8C%D8%A7%D8%AF%DA%AF%DB%8C%D8%B1%DB%8C-%D9%85%D8%A7%D8%B4%DB%8C%D9%86-mk273/)
 
+
diff --git a/free-programming-playgrounds.md b/free-programming-playgrounds.md
index ce7b260d..08a1a7ca 100644
--- a/free-programming-playgrounds.md
+++ b/free-programming-playgrounds.md
@@ -194,6 +194,7 @@
 ### Ruby
 
 * [Codepad](http://codepad.org)
+* [TryRuby](https://try.ruby-lang.org)
 
 
 ### Rust
@@ -234,3 +235,4 @@
 
 * [Playground](https://www.typescriptlang.org/play/index.html)
 * [StackBlitz](https://stackblitz.com/fork/typescript)
+